It is not found in the Bible. If the Millennium is going to be a perfect utopia with no problems whatsoever, then there is no need for Christ to rule; or to judge among the nations and rebuke many people (Is 2:4; Micah 4:3); or for the Church to be priests and rule with him making judgments (Ps 9:8; 67:4; 149:9; 1 Cor 6:3). Yes, during the Millennium the nations will not be allowed to make war, but there will still be problems to solve, disputes to settle, crimes (sins) to judge, decisions to execute. It’s most definitely going to be a whole lot better with Satan bound for a thousand years, but it won’t be a utopia.